. Select the most appropriate option to substitute the underlined segment in the following sentence. Choose ‘No improvement’ as an answer if the sentence is grammatically correct. I cannot understand that you are trying to say.

Correct answer: what you

Explanation: The correct answer is B.✅ The correct word here is "what", which is used to refer to the thing being said. “What you are trying to say” means the thing that you are trying to communicate, which fits the context perfectly. “That you are trying to say” is incorrect and does not make proper grammatical sense. “Which” and “who” are incorrect relative pronouns for this context. Correct sentence: I cannot understand what you are trying to say.